Software updating script for Ubuntu/Debian (apt-based systems)

sup.sh

#!/bin/bash
# A script for updating apt-based Linux distros
# ... put it in ~/.local/bin, /usr/local/bin, or anywhere in your $PATH

# Function to run
function run_update {
	printf "\\n\e[1;31m%s\e[0m\\n" "apt update"
	apt update

	printf "\\n\e[1;31m%s\e[0m\\n" "apt dist-upgrade"
	apt dist-upgrade

	printf "\\n\e[1;31m%s\e[0m\\n" "apt autoremove"
	apt autoremove

	printf "\\n\e[1;31m%s\e[0m\\n" "dpkg -l | grep "^rc" | awk '{print \$2}' | xargs -r dpkg --purge"
	dpkg -l | grep "^rc" | awk '{print $2}' | xargs -r dpkg --purge

	printf "\\n\e[1;31m%s\e[0m\\n" "exit"

	# Other package managers
	if [ -n "$(which flatpak)" ]; then
		printf "\\n\e[1;31m%s\e[0m\\n" "flatpak update"
		flatpak update
	fi
}

# Execute as sudo
printf "\\n\e[1;31m%s\e[0m\\n" "sudo su"
FUNC=$(declare -f run_update)
sudo bash -c "$FUNC; run_update"